Locomotive structure



y 1938- w. L LENTZ in AL 2,119,082

LOCOMOTIVE STRUCTURE Filed Sept 26, 1935 3 Sheets-Sheet l May 31, 1938.

w. L. LE NTZ ET AL. LOCOMOTIVE STRUCTURE Filed Sept. 26. 1955 s snets-shet 2 May 31, 1938- w. LVENTZ ET-AL LO COMOTIVE STRUCTURE FiledSept; 26, 1935 3 Sheets-Sheet 3 Patented May 31, 1938 UNITED STATESPATENT OFFIQE Kantola, Ashtabula,

Ohio, assignors to The New York Central Railroad Company, a corporationof New York Application September 26, 1935, Serial No. 42,343

Claims.

This invention relates to a smoke lifting scoop for steam locomotivesand particularly for steam locomotives of streamlined type.

In a prior application for patent Serial No.

5 42,342, filed September 26, 1935, there is disclosed a streamlineconstruction for locomotives including a cowling and hood about the bodyand forward portions of the boiler. This cowling is provided with an airscoop channel or chute opening at its forward end through its front orthrough the top of the hood and extending rearwardly about and beyond astreamlined smoke stack and terminating'at its rear end adjacent to thestack in a deflector or scoop plate, the construction being such that inthe forward travel of the locomotive air flowing rearwardly through theair scoop channel or chute and striking the deflector or scoop plate isdeflected upwardly and rearwardly, whereby the smoke and gases issuingfrom the stack are carried upwardly to a predetermined height and causedto travel rearwardly above the horizontal plane of the top of thelocomotive cab, thus preventing the smoke from the stack from cloudingthe vision of the engineer and also preventing the other smoke nuisancesoccurring in the operation of an ordinary steam locomotive not soequipped. In such prior application is also shown the use of side scoopsor chutes independent of the cowl scoop or chute for projecting streamsof air upwardly and rearwardly into the atmosphere to augment the smokelifting action of the lifting streams produced by the cowl scoop.

The object of the present invention is to further improve and increasethe efficiency of the cowl scoop and to provide means for directlysupplying thereto auxiliary blasts of air whereby the smoke liftingaction of the cowl scoop may be increased according to requirementswithout the necessity of undesirably changing the form or structure ofthe cowl scoop.

The invention consists of the features of construction, combination andarrangement of parts, F hereinafter fully described. and claimed,reference being had to the accompanying drawings, in

which: 7

Fig. l is a View in side elevation of a streamlined locomotive embodyingour invention.

Fig. 2 is a front perspective view thereof.

Fig. 3 is a top plan view, on an enlarged scale, of the forward portionof the locomotive, with parts appearing in section, showing the smokestack, cowl scoop and the auxiliary air blast 3 channels or ductsassociated therewith.

Fig. 4 is a side elevation, partly in section, of the parts appearing inFig. 3.

Fig.5 is a longitudinal section taken on line 55-of Fig. 3.

Fig. 6 is a transverse section taken on line 66 5 of Fig. 3.

Referring now moreparticularly to the drawings, l designates a steamlocomotive having a boiler 2, cab 3, side running boards 4, and suitablystreamlined smoke stack' 5 and auxiliary steam exhaust 6. Enclosing theboiler 2 longitudinally between the front of the cab and tip of thepilot is a sheet steel streamline cover comprising a cowling 1 and ahood 8. The cowling l extends transversely over the boiler in spacedrelation thereto between-the running boards and is supported by asuitable framework structure secured to the boiler'shell and to therunning boards. The hood 8 extends vertically at an upward and rearwardslope from the tip of the pilot to the-forward end of the fireboxportion of the boiler, where it is joined to the front of the'cowling,and said hood is parabolically curved transverselyto deflect head orangle wind currents toward the sides of the locomotive. 8a are stairways-or ladders and air chutes at opposite sides of the locomotive. Theconstruction of these parts and their operating characteristics mayaccord with the disclosure in these respects set forth in the aforesaidprior application.

The smoke stack and auxiliary steam exhaust are of streamline contour orprovided with a suitable streamline fairing or jacket 9, and theseelementsare arranged in a-depressed portion at the forward end of thecowling. This depressed portion is formed by vertical longitudinal wallsill and an upwardly and rearwardlyinclined rear end wall ll, forming anair channel or-chute l2 extending from the front of the cowling aboutand on opposite sides of the smoke stack to a point adjacent to and inrear thereof and terminating at its rear end in the wall I I. This chutecommunicates at its forward end with an inlet opening l3 formedpartially in the forward portion of the cowling and partially in thecentral portion of the top of the hood, which opening may be covered bya grille or screen l4 connecting the side walls of the opening andpreserving the contour of such portion of the hood. The wall ll slopesat a proper angle to form a scoop plate or deflector to deflect currentsof air upwardly and rearwardly. In the forward travel of the locomotiveair entering the chute through the inlet opening l3 travels rearwardlytherein on opposite sides of and beyond the smokerstack and auxiliarysteam exhaust and strikes against the scoop l I, whereby this air andthe streams of air flowing along the sides of the smoke stack are shotupwardly and rearwardly to a level above the top of the locomotive cab,carrying with them the smoke and gases issuing from the smoke stack. Thetop of the forward portion of the channel or chute and the divisions ofthis channel on opposite sides of the smoke stack may be left open, ormay be closed by a cover plate between the hood and a point coincidingwith the transverse center of the smoke stack. if desired.

The present invention provides means for producing and projectingauxiliary currents or blasts of air into the channel or chute to minglewith and augment the volume and increase the smoke lifting effect of themain blast or current of air on the smoke and gases issuing from thesmoke stack. To this end auxiliary channels or ducts I 5 are disposed onopposite sides of the channel and communicate at their forward ends withair inlet openings l6 provided in the hood on opposite sides of theinlet l3, which openings are covered by grilles or screens I!maintaining the streamline continuity of the sides of the top portion ofthe hood. Each duct I5 is in communication at its rear end with the rearend of the channel or chute I2 through ports or nozzle openings l8, eachprovided with a louvre or deflector plate IQ for guiding the streams ofair issuing from the ducts l5 toward the scoop plate H. Air enteringeach duct [5 through its inlet Hi thus discharges through the nozzles l8in the form of blasts of high intensity which mingle with the streams ofair traversing the channel l2 and striking the scoop plate I I. The airblast supplied by the channel I2 is thus augmented in volume andintensity by the auxiliary air blasts from the ducts l5, insuring thelifting of the smoke and gases issuing from the smoke stack to theintended high dissipation level at all locomotive speeds and even whenthe locomotive is traveling at comparatively low speed. This liftingaction of the air blasts also promotes the efficiency of the draftthrough the smoke stack, as will be readily understood. The rear end ofthe ducts l5 may, as shown, be connected in rear of the scoop plate IIby a cross duct 20, and the top walls of the ducts l5 and 20 may beprovided with vent apertures or slots 2| to allow any air in excess ofthat which may freely pass through the nozzles 8 to escape to the freeatmosphere, thus preventing any possible choking of the air at the rearends of the ducts [5. By thus providing the channels !5 to supplyadditional streams of air and confining the air until it dischargesthrough the nozzles H! for impingement with the air stream flowingthrough the channel l2 against the scoop plate II auxiliary streams ofhigh velocity are furnished to increase the smoke lifting capacity to adegree to ensure lifting of the smoke at any train hauling locomotivespeed and under all contrary natural wind conditions to a level abovethat of the locomotive cab and cars of the train to prevent the smokenuisances to which the engineer in the cab and passengers in the cars ofthe train are ordinarily subjected.

i i/bile the structural organization shown for the purpose set forth ispreferred, it will, of course, be understood that the same is merelyexemplificative, and that changes in the form, proportions andarrangement of the parts may be made within the scope of the appendedclaims without departing from the spirit or sacrificing any of theadvantages of the invention.

What is claimed is:-

1. A locomotive having a boiler, a cab, a smoke stack located forwardlyof the cab, an air scoop disposed adjacent to the stack and at leastpartially surrounding the stack and having an inclined rear surface fordirecting a current of air upwardly to lift the smoke and gases issuingfrom the stack to a level above the level of the cab, a centrallongitudinal air conducting channel extending forwardly from said scoopand communicating at its rear end therewith, a central air inlet at thefront of the locomotive communicating with the air conducting channel,air inlets at the front of the locomotive located one on each side ofsaid central air inlet, and air conducting ducts extendinglongitudinally of the locomotive adjacent to and on opposite sides ofand substantially in the same horizontal plane as and substantiallyparallel with the longitudinal axis of the central channel and havinginlet ends communicating with said side air inlets and outlet endscommunicating with opposite sides of the scoop for discharging air intothe scoop to augment the smoke lifting capacity of the firstnamedcurrent of air.

2. A locomotive having a boiler, a cab, a smoke stack located forwardlyof the cab, an air scoop disposed adjacent to the stack and at leastpartially surrounding the stack and having an inclined rear surface fordirecting a current of air upwardly to lift the smoke and gases issuingfrom the stack to a level above the level of the cab, an air channelleading forwardly from the scoop in the central line of the locomotiveand communicating at its rear end with the scoop, a central air inlet atthe front of the locomotive communicating with the forward end of thechannel, air inlets at the front of the locomotive located ad- J'acentto and one on each side of the central horizontal air inlet, and airconducting ducts leading from the forward portion of the locomotive onopposite sides of and substantially in the same horizontal plane as andparallel with the longitudinal axis of the channel and having inlet endscommunicating with said side air inlets and outlet ends each providedwith a longitudinal series of lateral ducts communicating with theadjacent sides of the scoop for discharging air into the scoop at therear thereof to augment the smoke lifting capacity of the first-namedcurrent of air.

3. A locomotive having a boiler, a cab, a smoke stack located forwardlyof the cab, a hood covering the front of the boiler, a streamlinecowling extending over the top and downwardly at the sides of the boilerand structurally formed to provide an air scoop disposed adjacent to andat least partially surrounding the stack and opening at its rear end tothe atmosphere and having an inclined rear surface for directing acurrent of air upwardly to lift the smoke and gases issuing from thestack to a level above the level of the cab, an enclosed air conductingchannel extending from said scoop a portion of the distance between thesame and the hood, an air inlet at the front of the locomotive openingpartially through the top of the cowling and partially through the upperportion of the hood and communicating at its rear with the scoop, andair conducting ducts extending longitudinally of the boiler beneath thecowling on opposite sides of and parallel with the longitudinal axis ofthe air conducting channel for conducting confined currents of air tothe scoop, said ducts having inlet ends opening through the upper end ofthe hood at opposite sides of the air inlet of the channel being incommunication at their rear ends with the scoop and with the atmosphereand in communication with each other at the rear of the scoop by meansof a cross duct in communication with the atmosphere.

4. A locomotive having a boiler, a cab, a smoke stack located forwardlyof the cab, a hood covering the front end of the boiler, a streamlinecowling extending along the top and downwardly at the sides of theboiler between the cab and hood and structurally formed to provide anair scoop comprising a central longitudinal conducting channel disposedat its rear end about the smoke stack and extending therefrom toward thehood, said channel terminating at its rear end in an inclined deflectoroperating for directing the current of air flowing rearwardly in thechannel upwardly to lift the smoke and gases issuing from the smokestack to a level above the level of the cab, a central air inlet at thefront of the locomotive opening through the hood and communicating withthe forward end of said channel, an air inlet in the hood on each sideof said central air inlet, and air ducts extending horizontally beneaththe cowling adjacent to and substantially in the same horizontal planeas and parallel with and at opposite sides of said central channel andhaving entrance ends communicating at the forward end of the locomotivewith said side air inlets and having discharge ends communicating withthe adjacent sides of the central longitudinal channel adjacent to thedeflector for discharging auxiliary lifting currents of air thereinto.

5. A locomotive having a boiler, a cab, a smoke stack, a hood coveringthe front end of the boiler, a streamline cowling extending along thetop and downwardly at the sides of the boiler and structurally formed toprovide an air scoop at least partially surrounding the stack andincluding an inclined rear surface for directing a current of airupwardly to lift the smoke and gases issuing from the stack .to a levelabove the level of the cab, an air channel extending beneath the cowlingand extending forwardly from the scoop in the central longitudinal lineof the locomotive, a central air inlet opening through the hood andcommunicating with the forward end of the channel for admitting airthereto, air inlets in the hood disposed one on each side of saidcentral air inlet, and horizontal conductors of uniform width extendingfrom the hood beneath the cowling to the rear portion of the scoopadjacent to and on opposite sides of and substantially in the samehorizontal plane as and parallel with the longitudinal axis of saidchannel and communicating at their forward ends with the side inlets inthe hood and at their rear ends at a plurality of longitudinally spacedpoints with the sides of the scoop, said conductors serving forconducting confined currents of air to the scoop to augment the smokelifting capacity of the first-named current of air.

CARL F. KANTOLA. WILLIAM L. LENTZ.

